Do not use meson ternary operations to avoid bumping the required meson version
Do not use meson ternary operations to avoid bumping the required meson version

This fixes building on RHEL 8.

fwupd/fwupd,fwupd/fwupd,hughsie/fwupd,hughsie/fwupd,fwupd/fwupd,fwupd/fwupd,hughsie/fwupd,hughsie/fwupd